Pneumatic puncture-proof tire.



F. NEWBAUER. PNBUMATIG PUNGTURB PROOF ma. APPLICATION FILED APE.2, 1913. ,1,084,470e Patented Jan. 13, 1914.

WITNESSES noms rams. In. um. musulman. u. c.

UNITED sTATEs PATENT OFFICE.

rALTINn lauwe-rama,y or' VALLEY erT'Y, NORTH DAKOTA, ./.issiefnon or oNE-THIRD To ,EMIL FELDMANN, or VALLEY CITY, NORTH DAKOTA.

PNUMATio PUNoTUnE-Pnoor Tian.

Patented Jan.- 13, 1914.

'Application iiled April 2, 1913. Serial No. 758,347.

re'tain the tread rim detachably in position,` i

To all 'whom it may concern Be it known that I, FALTINE NEWBAUER, an citizen of the United States, and a resident ofValley City, in the county of Barnes 5 and State of North Dakota, have invented izing the preferred embodiment Which. is.

illustrated as an example, lwill be particularly` explained inthe specific description following. g

Reference is to be' had to the accompanying dravvino forming a part ofthisv specification, in W ich similar characters of reference indicate corresponding parts.

Figure 1l shows in crross section a tire ern-j bodying myy invention and Fig. 2 is a detail longitudinal section of thedetach'able tread,`

V showing the overlapped ends of the tread ri'm.

The tire isillustrated in connect-ion With a standard rim 10, having clencherwrmgs 11 and alocking ring v12', the rim having the' 3.5 usual-side flange '13 and the usual channel 14 to receive the locling ring 12. v "he tire body or shoe 15l extends continuously in closed form at the inner side or rim portion, as at 15a and is open at the tread portion, being formed with beveled, overlapped edges as at 15b. f v y An inner tube/16 of any approved formis employed, and at the closed inner portion of the .tire any approved arrangement of annular, hardened, clencher members, usually of hard rubber 15c are incorporated in the tire to co-act with theclencher rings 11. In the preferred example the outer casing 1,7 ofthe l tire terminates atthe sides and does not extend across the tread as in the ordinary form of tire. l Ar novel, detachable tread is provided, which consists of a metallic tire rim or tread 4rim 18, hereinafter designated as a tread riin in distinguishing itJfroni the wheelrim. To-

the tire 15 is formed with annular, hardenedv elements 19, usually ofhard rubber, at each side outward radially from the edges of the o uter casing 17, there being produced in the tire 15 adjacent to the hardened annular elements'lf), beads or. ribs 20 extending annu` larly at each side, to present lateral shoulf ders that are received in channels in the tire -rnn 18, the channels being produced by forming bends 21 in the tread rim, the channels thus produced presenting shoulders op? posed to and engageable under the -shoulders 20 ofthe tire. The side edges ofthe tread rim 18 are further formed with exterior grooves or depressions 22, the extreme edges 23 extending outward laterally beyond the beads 20 and beyond the casingelements 1'7 to )revent puncture of said casings at the si es. The grooves or depressions 22 receive the sideedge of a detach ablelcushion comprising a base 24E of canvas and rubber and a facing 25 of rubber. To retain thedetachable tread cushion in position, rings 26, preferably of carbon steel `wire are incorporated and vulcanized therein, thereby providing enlarged or shouldered edge portions '27 at the inner sides of the cushion, which are received Within the annular grooves 23 of the wheel rim.

It is obvious-that'the inflation ofthe inner tube through the medium of the usual valve (not shown) will serve'to distend the shoe or tire body 15 and hold the protuberant or ribbed annular `portions 2() in engagement with the channeled sides of the tire rim 18. By forming the tire 15 1nelosed form to extend continuously at its inner periphery or A sary provision for the insertion and removal of the inner tube. The'm'etallic tread rim '18, itis obvious, constitutes an absolute protection against puncturing of the inner tube, While the side edges of said tread rim prolos vent rim-cutting, The provision of the detaehab'le tread cushion on the tire rim cnablesnie to renew the tread, and thus at a ycomparatively trilling cost, restore the tire to its original serviceable condition.

1. To facilitate the placing of the rim 18 Within the tread it is made in the form of a split rim, the ends'overlapping and being beveled as at 18a (Fig. 2). The described construction affords a prac- 'ticalglneans for carrying my invention into effect; and I would state in conclusion that I do not limit myself strictly to the mechanif cal details herein illustrated, since mani! and presenting at the inner sides of the beads exterior annular channels corresponding with and receiving the annular beads of the shoe, the rim furthermore presenting exterior annular channels radially inward from the interior channels, the rim having terminal .side edges projecting laterally beyond the exterior beads'of the rim and beyond the side casings, and a tread cushion fitting over the saidrim, said cushion conforrmng to the exterior beads of the rim and having thickened edge portions received against the laterally projectingy edge portions of the rim and fitting the exterior channels of the said rim.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FALTINE NEWBAUER.

lVitnesses:

M. J. ENGLISH,

JOSEPHINE EFTELAND. 

